ansible/roles/isc_dhcp_server/tasks/main.yml

---
- name: Install dhcp (re2o-service)
  import_role:
    name: re2o-service
  vars:
    service_repo: https://gitlab.federez.net/re2o/dhcp.git
    service_name: dhcp
    service_version: master
    service_config:
      hostname: re2o.auro.re
      username: service-user
      password: "{{ vault_serviceuser_passwd }}"

- name: Ensure appropriate permissions on dhcp re2o service
  file:
    path: /var/local/re2o-services/dhcp/
    state: directory
    owner: re2o-services
    group: nogroup
    recurse: yes
    mode: u=rwX,g=rX,o=rX

- name: Install isc-dhcp-server
  apt:
    update_cache: true
    name: isc-dhcp-server
    state: present
  register: apt_result
  retries: 3
  until: apt_result is succeeded
  notify: restart dhcpd

- name: Ensure dhcp log directory exists
  file:
    path: /var/log/dhcp
    owner: root
    group: root
    mode: u=rwx,g=rx,a=rx
    state: directory

- name: Ensure rsyslog knows where to send dhcp logs
  lineinfile:
    path: /etc/rsyslog.conf
    line: "local7.* /var/log/dhcp/dhcpd.log"
  notify: restart rsyslog

- name: Configure dhcp log rotation
  template:
    src: logrotate.d/dhcp.j2
    dest: /etc/logrotate.d/dhcp
    mode: 0644

- name: set up cron to reload dhcp re2o service
  cron:
    # Do not change this name or idempotence *might* be lost.
    name: dhcp-re2o-service
    cron_file: re2o-services
    minute: "*/2"
    hour: "*"
    day: "*"
    weekday: "*"
    month: "*"
    user: root
    job: "/usr/bin/python3 /var/local/re2o-services/dhcp/main.py"

- name: Configure /etc/default/isc-dhcp-server
  template:
    src: default/isc-dhcp-server.j2
    dest: /etc/default/isc-dhcp-server
    mode: 0644
  notify: restart dhcpd

- name: Configure dhcp-failover.conf
  template:
    src: dhcp/dhcp-failover.conf.j2
    dest: /etc/dhcp/dhcp-failover.conf
    mode: 0600
  when: dhcp_failover_enabled
  notify: restart dhcpd

- name: Configure dhcpd.conf
  template:
    src: dhcp/dhcpd.conf.j2
    dest: /etc/dhcp/dhcpd.conf
    mode: 0600
  notify: restart dhcpd

- name: Configure subnets.conf (regular service)
  template:
    src: dhcp/regular-subnets.conf.j2
    dest: /etc/dhcp/subnets.conf
    mode: 0600
  notify: restart dhcpd
  when: not is_aurore_host

- name: Configure subnets.conf (aurore service)
  template:
    src: dhcp/aurore-subnets.conf.j2
    dest: /etc/dhcp/subnets.conf
    mode: 0600
  notify: restart dhcpd
  when: is_aurore_host

- name: force run dhcp re2o-service
  command: /var/local/re2o-services/dhcp/main.py --force

- name: Ensure dhcpd is running
  service:
    name: isc-dhcp-server
    state: started
    enabled: true